US Bridges

S-26-23 over Lake Swamp

Fair

Horry County, South Carolina · 10 MI SE Galivants Ferry · Structure no. 000000000008564

Built
1992
33 years old
Condition
Fair
inspected July 2023
Type
Slab
Concrete Continuous
Length
150 ft
5 main spans
Daily traffic
1,450
2023 count
Owner
State
State Highway Agency

About this bridge

S-26-23 over Lake Swamp is a concrete continuous slab carrying S-26-23 over Lake Swamp in Horry County, South Carolina. It was built in 1992, so it is 33 years old, younger than the South Carolina average of 48 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 1,450 vehicles a day, roughly 10% of them trucks, projected to reach 2,117 by 2043. The structure is 150 ft (45.7 m) long and 37 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

CarriesS-26-23
CrossesLake Swamp
Location10 MI SE Galivants Ferry
RouteState Highway 23
Coordinates34.08851, -79.14562
Functional classRural Major Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating55.3 US tons
Inventory rating42.5 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20 + Mod
Structure length150 ft (45.7 m)
Longest span30 ft (9.1 m)
Deck width37 ft (11.2 m)
Roadway width34 ft (10.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,450 (2023)
Projected traffic2,117 by 2043
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was S-26-23 over Lake Swamp built?

It was built in 1992, making it 33 years old in 2025.

What condition is S-26-23 over Lake Swamp in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in July 2023.

How much traffic does S-26-23 over Lake Swamp carry?

About 1,450 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is S-26-23 over Lake Swamp?

The structure is 150 ft (45.7 m) long with a longest span of 30 ft (9.1 m) and a deck 37 ft wide.

Who owns S-26-23 over Lake Swamp?

It is owned by the State Highway Agency.